{% extends '__base__.html' %}

{% block title %}Math problem 2-Jack's web app{% endblock %}

{% block content %}
<h3>Problem2</h3>
<p>供题:Mr.Lu</p>
<p>设n为大于10的正整数，且n的数码全为1，3，7或9。求证:n有一个大于10的素因子。</p>
<textarea class="answer" placeholder="write here..."></textarea>
{% endblock %}